scheduler/client.c

   1 /*
   2  * Client part of the client/server communication
   3  *
   4  * Copyright (C) 1998 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <assert.h>
  10 #include <ctype.h>
  11 #include <errno.h>
  12 #include <fcntl.h>
  13 #include <pwd.h>
  14 #include <signal.h>
  15 #include <stdio.h>
  16 #include <string.h>
  17 #include <sys/types.h>
  18 #ifdef HAVE_SYS_SOCKET_H
  19 # include <sys/socket.h>
  20 #endif
  21 #ifdef HAVE_SYS_WAIT_H
  22 #include <sys/wait.h>
  23 #endif
  24 #include <sys/un.h>
  25 #ifdef HAVE_SYS_MMAN_H
  26 #include <sys/mman.h>
  27 #endif
  28 #include <sys/stat.h>
  29 #include <sys/uio.h>
  30 #include <unistd.h>
  31 #include <stdarg.h>
  32
  33 #include "wine/port.h"
  34 #include "thread.h"
  35 #include "server.h"
  36 #include "winerror.h"
  37 #include "options.h"
  38
  39 /* Some versions of glibc don't define this */
  40 #ifndef SCM_RIGHTS
  41 #define SCM_RIGHTS 1
  42 #endif
  43
  44 #define CONFDIR    "/.wine"        /* directory for Wine config relative to $HOME */
  45 #define SERVERDIR  "/wineserver-"  /* server socket directory (hostname appended) */
  46 #define SOCKETNAME "socket"        /* name of the socket file */
  47
  48 /* data structure used to pass an fd with sendmsg/recvmsg */
  49 struct cmsg_fd
  50 {
  51     int len;   /* sizeof structure */
  52     int level; /* SOL_SOCKET */
  53     int type;  /* SCM_RIGHTS */
  54     int fd;    /* fd to pass */
  55 };
  56
  57 static void *boot_thread_id;
  58 static sigset_t block_set;  /* signals to block during server calls */
  59 static int fd_socket;  /* socket to exchange file descriptors with the server */
  60
  61 /* die on a fatal error; use only during initialization */
  62 static void fatal_error( const char *err, ... ) WINE_NORETURN;
  63 static void fatal_error( const char *err, ... )
  64 {
  65     va_list args;
  66
  67     va_start( args, err );
  68     fprintf( stderr, "wine: " );
  69     vfprintf( stderr, err, args );
  70     va_end( args );
  71     exit(1);
  72 }
  73
  74 /* die on a fatal error; use only during initialization */
  75 static void fatal_perror( const char *err, ... ) WINE_NORETURN;
  76 static void fatal_perror( const char *err, ... )
  77 {
  78     va_list args;
  79
  80     va_start( args, err );
  81     fprintf( stderr, "wine: " );
  82     vfprintf( stderr, err, args );
  83     perror( " " );
  84     va_end( args );
  85     exit(1);
  86 }
  87
  88 /***********************************************************************
  89  *           server_protocol_error
  90  */
  91 void server_protocol_error( const char *err, ... )
  92 {
  93     va_list args;
  94
  95     va_start( args, err );
  96     fprintf( stderr, "wine client error:%p: ", NtCurrentTeb()->tid );
  97     vfprintf( stderr, err, args );
  98     va_end( args );
  99     SYSDEPS_ExitThread(1);
 100 }
 101
 102
 103 /***********************************************************************
 104  *           server_protocol_perror
 105  */
 106 void server_protocol_perror( const char *err )
 107 {
 108     fprintf( stderr, "wine client error:%p: ", NtCurrentTeb()->tid );
 109     perror( err );
 110     SYSDEPS_ExitThread(1);
 111 }
 112
 113
 114 /***********************************************************************
 115  *           __wine_server_exception_handler (NTDLL.@)
 116  */
 117 DWORD __wine_server_exception_handler( PEXCEPTION_RECORD record, EXCEPTION_FRAME *frame,
 118                                        CONTEXT *context, EXCEPTION_FRAME **pdispatcher )
 119 {
 120     struct __server_exception_frame *server_frame = (struct __server_exception_frame *)frame;
 121     if ((record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
 122         NtCurrentTeb()->buffer_pos = server_frame->buffer_pos;
 123     return ExceptionContinueSearch;
 124 }
 125
 126
 127 /***********************************************************************
 128  *           wine_server_alloc_req (NTDLL.@)
 129  */
 130 void wine_server_alloc_req( union generic_request *req, size_t size )
 131 {
 132     unsigned int pos = NtCurrentTeb()->buffer_pos;
 133
 134     assert( size <= REQUEST_MAX_VAR_SIZE );
 135
 136     if (pos + size > NtCurrentTeb()->buffer_size)
 137         server_protocol_error( "buffer overflow %d bytes\n",
 138                                pos + size - NtCurrentTeb()->buffer_pos );
 139
 140     NtCurrentTeb()->buffer_pos = pos + size;
 141     req->header.var_offset = pos;
 142     req->header.var_size = size;
 143 }
 144
 145
 146 /***********************************************************************
 147  *           send_request
 148  *
 149  * Send a request to the server.
 150  */
 151 static void send_request( union generic_request *request )
 152 {
 153     int ret;
 154
 155     if ((ret = write( NtCurrentTeb()->request_fd, request, sizeof(*request) )) == sizeof(*request))
 156         return;
 157     if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
 158     if (errno == EPIPE) SYSDEPS_ExitThread(0);
 159     server_protocol_perror( "sendmsg" );
 160 }
 161
 162 /***********************************************************************
 163  *           wait_reply
 164  *
 165  * Wait for a reply from the server.
 166  */
 167 static void wait_reply( union generic_request *req )
 168 {
 169     int ret;
 170
 171     for (;;)
 172     {
 173         if ((ret = read( NtCurrentTeb()->reply_fd, req, sizeof(*req) )) == sizeof(*req))
 174             return;
 175         if (!ret) break;
 176         if (ret > 0) server_protocol_error( "partial read %d\n", ret );
 177         if (errno == EINTR) continue;
 178         if (errno == EPIPE) break;
 179         server_protocol_perror("read");
 180     }
 181     /* the server closed the connection; time to die... */
 182     SYSDEPS_ExitThread(0);
 183 }
 184
 185
 186 /***********************************************************************
 187  *           wine_server_call (NTDLL.@)
 188  *
 189  * Perform a server call.
 190  */
 191 unsigned int wine_server_call( union generic_request *req, size_t size )
 192 {
 193     sigset_t old_set;
 194
 195     memset( (char *)req + size, 0, sizeof(*req) - size );
 196     sigprocmask( SIG_BLOCK, &block_set, &old_set );
 197     send_request( req );
 198     wait_reply( req );
 199     sigprocmask( SIG_SETMASK, &old_set, NULL );
 200     return req->header.error;
 201 }
 202
 203
 204 /***********************************************************************
 205  *           wine_server_send_fd
 206  *
 207  * Send a file descriptor to the server.
 208  */
 209 void wine_server_send_fd( int fd )
 210 {
 211 #ifndef HAVE_MSGHDR_ACCRIGHTS
 212     struct cmsg_fd cmsg;
 213 #endif
 214     struct send_fd data;
 215     struct msghdr msghdr;
 216     struct iovec vec;
 217     int ret;
 218
 219     vec.iov_base = (void *)&data;
 220     vec.iov_len  = sizeof(data);
 221
 222     msghdr.msg_name    = NULL;
 223     msghdr.msg_namelen = 0;
 224     msghdr.msg_iov     = &vec;
 225     msghdr.msg_iovlen  = 1;
 226
 227 #ifdef HAVE_MSGHDR_ACCRIGHTS
 228     msghdr.msg_accrights    = (void *)&fd;
 229     msghdr.msg_accrightslen = sizeof(fd);
 230 #else  /* HAVE_MSGHDR_ACCRIGHTS */
 231     cmsg.len   = sizeof(cmsg);
 232     cmsg.level = SOL_SOCKET;
 233     cmsg.type  = SCM_RIGHTS;
 234     cmsg.fd    = fd;
 235     msghdr.msg_control    = &cmsg;
 236     msghdr.msg_controllen = sizeof(cmsg);
 237     msghdr.msg_flags      = 0;
 238 #endif  /* HAVE_MSGHDR_ACCRIGHTS */
 239
 240     data.tid = (void *)GetCurrentThreadId();
 241     data.fd  = fd;
 242
 243     for (;;)
 244     {
 245         if ((ret = sendmsg( fd_socket, &msghdr, 0 )) == sizeof(data)) return;
 246         if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
 247         if (errno == EINTR) continue;
 248         if (errno == EPIPE) SYSDEPS_ExitThread(0);
 249         server_protocol_perror( "sendmsg" );
 250     }
 251 }
 252
 253
 254 /***********************************************************************
 255  *           receive_fd
 256  *
 257  * Receive a file descriptor passed from the server.
 258  */
 259 static int receive_fd( handle_t *handle )
 260 {
 261     struct iovec vec;
 262     int ret, fd;
 263
 264 #ifdef HAVE_MSGHDR_ACCRIGHTS
 265     struct msghdr msghdr;
 266
 267     fd = -1;
 268     msghdr.msg_accrights    = (void *)&fd;
 269     msghdr.msg_accrightslen = sizeof(fd);
 270 #else  /* HAVE_MSGHDR_ACCRIGHTS */
 271     struct msghdr msghdr;
 272     struct cmsg_fd cmsg;
 273
 274     cmsg.len   = sizeof(cmsg);
 275     cmsg.level = SOL_SOCKET;
 276     cmsg.type  = SCM_RIGHTS;
 277     cmsg.fd    = -1;
 278     msghdr.msg_control    = &cmsg;
 279     msghdr.msg_controllen = sizeof(cmsg);
 280     msghdr.msg_flags      = 0;
 281 #endif  /* HAVE_MSGHDR_ACCRIGHTS */
 282
 283     msghdr.msg_name    = NULL;
 284     msghdr.msg_namelen = 0;
 285     msghdr.msg_iov     = &vec;
 286     msghdr.msg_iovlen  = 1;
 287     vec.iov_base = (void *)handle;
 288     vec.iov_len  = sizeof(*handle);
 289
 290     for (;;)
 291     {
 292         if ((ret = recvmsg( fd_socket, &msghdr, 0 )) > 0)
 293         {
 294 #ifndef HAVE_MSGHDR_ACCRIGHTS
 295             fd = cmsg.fd;
 296 #endif
 297             if (fd == -1) server_protocol_error( "no fd received for handle %d\n", *handle );
 298             fcntl( fd, F_SETFD, 1 ); /* set close on exec flag */
 299             return fd;
 300         }
 301         if (!ret) break;
 302         if (errno == EINTR) continue;
 303         if (errno == EPIPE) break;
 304         server_protocol_perror("recvmsg");
 305     }
 306     /* the server closed the connection; time to die... */
 307     SYSDEPS_ExitThread(0);
 308 }
 309
 310
 311 /***********************************************************************
 312  *           wine_server_recv_fd
 313  *
 314  * Receive a file descriptor passed from the server.
 315  * The file descriptor must not be closed.
 316  * Return -2 if a race condition stole our file descriptor.
 317  */
 318 int wine_server_recv_fd( handle_t handle )
 319 {
 320     handle_t fd_handle;
 321
 322     int fd = receive_fd( &fd_handle );
 323
 324     /* now store it in the server fd cache for this handle */
 325
 326     SERVER_START_REQ( set_handle_info )
 327     {
 328         req->handle = fd_handle;
 329         req->flags  = 0;
 330         req->mask   = 0;
 331         req->fd     = fd;
 332         if (!SERVER_CALL())
 333         {
 334             if (req->cur_fd != fd)
 335             {
 336                 /* someone was here before us */
 337                 close( fd );
 338                 fd = req->cur_fd;
 339             }
 340         }
 341         else
 342         {
 343             close( fd );
 344             fd = -1;
 345         }
 346     }
 347     SERVER_END_REQ;
 348
 349     if (handle != fd_handle) fd = -2;  /* not the one we expected */
 350     return fd;
 351 }
 352
 353
 354 /***********************************************************************
 355  *           get_config_dir
 356  *
 357  * Return the configuration directory ($WINEPREFIX or $HOME/.wine)
 358  */
 359 const char *get_config_dir(void)
 360 {
 361     static char *confdir;
 362     if (!confdir)
 363     {
 364         const char *prefix = getenv( "WINEPREFIX" );
 365         if (prefix)
 366         {
 367             int len = strlen(prefix);
 368             if (!(confdir = strdup( prefix ))) fatal_error( "out of memory\n" );
 369             if (len > 1 && confdir[len-1] == '/') confdir[len-1] = 0;
 370         }
 371         else
 372         {
 373             const char *home = getenv( "HOME" );
 374             if (!home)
 375             {
 376                 struct passwd *pwd = getpwuid( getuid() );
 377                 if (!pwd) fatal_error( "could not find your home directory\n" );
 378                 home = pwd->pw_dir;
 379             }
 380             if (!(confdir = malloc( strlen(home) + strlen(CONFDIR) + 1 )))
 381                 fatal_error( "out of memory\n" );
 382             strcpy( confdir, home );
 383             strcat( confdir, CONFDIR );
 384         }
 385         mkdir( confdir, 0755 );  /* just in case */
 386     }
 387     return confdir;
 388 }
 389
 390
 391 /***********************************************************************
 392  *           start_server
 393  *
 394  * Start a new wine server.
 395  */
 396 static void start_server( const char *oldcwd )
 397 {
 398     static int started;  /* we only try once */
 399     char *path, *p;
 400     if (!started)
 401     {
 402         int status;
 403         int pid = fork();
 404         if (pid == -1) fatal_perror( "fork" );
 405         if (!pid)
 406         {
 407             /* if server is explicitly specified, use this */
 408             if ((p = getenv("WINESERVER")))
 409             {
 410                 if (p[0] != '/' && oldcwd[0] == '/')  /* make it an absolute path */
 411                 {
 412                     if (!(path = malloc( strlen(oldcwd) + strlen(p) + 1 )))
 413                         fatal_error( "out of memory\n" );
 414                     sprintf( path, "%s/%s", oldcwd, p );
 415                     p = path;
 416                 }
 417                 execl( p, "wineserver", NULL );
 418                 fatal_perror( "could not exec the server '%s'\n"
 419                               "    specified in the WINESERVER environment variable", p );
 420             }
 421
 422             /* first try the installation dir */
 423             execl( BINDIR "/wineserver", "wineserver", NULL );
 424
 425             /* now try the dir we were launched from */
 426             if (full_argv0)
 427             {
 428                 if (!(path = malloc( strlen(full_argv0) + 20 )))
 429                     fatal_error( "out of memory\n" );
 430                 if ((p = strrchr( strcpy( path, full_argv0 ), '/' )))
 431                 {
 432                     strcpy( p, "/wineserver" );
 433                     execl( path, "wineserver", NULL );
 434                     strcpy( p, "/server/wineserver" );
 435                     execl( path, "wineserver", NULL );
 436                 }
 437                 free(path);
 438             }
 439
 440             /* now try the path */
 441             execlp( "wineserver", "wineserver", NULL );
 442
 443             /* and finally the current dir */
 444             if (!(path = malloc( strlen(oldcwd) + 20 )))
 445                 fatal_error( "out of memory\n" );
 446             p = strcpy( path, oldcwd ) + strlen( oldcwd );
 447             strcpy( p, "/wineserver" );
 448             execl( path, "wineserver", NULL );
 449             strcpy( p, "/server/wineserver" );
 450             execl( path, "wineserver", NULL );
 451             free(path);
 452             fatal_error( "could not exec wineserver\n" );
 453         }
 454         started = 1;
 455         waitpid( pid, &status, 0 );
 456         status = WIFEXITED(status) ? WEXITSTATUS(status) : 1;
 457         if (status) exit(status);  /* server failed */
 458     }
 459 }
 460
 461 /***********************************************************************
 462  *           server_connect
 463  *
 464  * Attempt to connect to an existing server socket.
 465  * We need to be in the server directory already.
 466  */
 467 static int server_connect( const char *oldcwd, const char *serverdir )
 468 {
 469     struct sockaddr_un addr;
 470     struct stat st;
 471     int s, slen, retry;
 472
 473     /* chdir to the server directory */
 474     if (chdir( serverdir ) == -1)
 475     {
 476         if (errno != ENOENT) fatal_perror( "chdir to %s", serverdir );
 477         start_server( "." );
 478         if (chdir( serverdir ) == -1) fatal_perror( "chdir to %s", serverdir );
 479     }
 480
 481     /* make sure we are at the right place */
 482     if (stat( ".", &st ) == -1) fatal_perror( "stat %s", serverdir );
 483     if (st.st_uid != getuid()) fatal_error( "'%s' is not owned by you\n", serverdir );
 484     if (st.st_mode & 077) fatal_error( "'%s' must not be accessible by other users\n", serverdir );
 485
 486     for (retry = 0; retry < 3; retry++)
 487     {
 488         /* if not the first try, wait a bit to leave the server time to exit */
 489         if (retry) usleep( 100000 * retry * retry );
 490
 491         /* check for an existing socket */
 492         if (lstat( SOCKETNAME, &st ) == -1)
 493         {
 494             if (errno != ENOENT) fatal_perror( "lstat %s/%s", serverdir, SOCKETNAME );
 495             start_server( oldcwd );
 496             if (lstat( SOCKETNAME, &st ) == -1) fatal_perror( "lstat %s/%s", serverdir, SOCKETNAME );
 497         }
 498
 499         /* make sure the socket is sane (ISFIFO needed for Solaris) */
 500         if (!S_ISSOCK(st.st_mode) && !S_ISFIFO(st.st_mode))
 501             fatal_error( "'%s/%s' is not a socket\n", serverdir, SOCKETNAME );
 502         if (st.st_uid != getuid())
 503             fatal_error( "'%s/%s' is not owned by you\n", serverdir, SOCKETNAME );
 504
 505         /* try to connect to it */
 506         addr.sun_family = AF_UNIX;
 507         strcpy( addr.sun_path, SOCKETNAME );
 508         slen = sizeof(addr) - sizeof(addr.sun_path) + strlen(addr.sun_path) + 1;
 509 #ifdef HAVE_SOCKADDR_SUN_LEN
 510         addr.sun_len = slen;
 511 #endif
 512         if ((s = socket( AF_UNIX, SOCK_STREAM, 0 )) == -1) fatal_perror( "socket" );
 513         if (connect( s, (struct sockaddr *)&addr, slen ) != -1)
 514         {
 515             fcntl( s, F_SETFD, 1 ); /* set close on exec flag */
 516             return s;
 517         }
 518         close( s );
 519     }
 520     fatal_error( "file '%s/%s' exists,\n"
 521                  "   but I cannot connect to it; maybe the wineserver has crashed?\n"
 522                  "   If this is the case, you should remove this socket file and try again.\n",
 523                  serverdir, SOCKETNAME );
 524 }
 525
 526
 527 /***********************************************************************
 528  *           CLIENT_InitServer
 529  *
 530  * Start the server and create the initial socket pair.
 531  */
 532 void CLIENT_InitServer(void)
 533 {
 534     int size;
 535     char hostname[64];
 536     char *oldcwd, *serverdir;
 537     const char *configdir;
 538     handle_t dummy_handle;
 539
 540     /* retrieve the current directory */
 541     for (size = 512; ; size *= 2)
 542     {
 543         if (!(oldcwd = malloc( size ))) break;
 544         if (getcwd( oldcwd, size )) break;
 545         free( oldcwd );
 546         if (errno == ERANGE) continue;
 547         oldcwd = NULL;
 548         break;
 549     }
 550
 551     /* if argv[0] is a relative path, make it absolute */
 552     full_argv0 = argv0;
 553     if (oldcwd && argv0[0] != '/' && strchr( argv0, '/' ))
 554     {
 555         char *new_argv0 = malloc( strlen(oldcwd) + strlen(argv0) + 2 );
 556         if (new_argv0)
 557         {
 558             strcpy( new_argv0, oldcwd );
 559             strcat( new_argv0, "/" );
 560             strcat( new_argv0, argv0 );
 561             full_argv0 = new_argv0;
 562         }
 563     }
 564
 565     /* get the server directory name */
 566     if (gethostname( hostname, sizeof(hostname) ) == -1) fatal_perror( "gethostname" );
 567     configdir = get_config_dir();
 568     serverdir = malloc( strlen(configdir) + strlen(SERVERDIR) + strlen(hostname) + 1 );
 569     if (!serverdir) fatal_error( "out of memory\n" );
 570     strcpy( serverdir, configdir );
 571     strcat( serverdir, SERVERDIR );
 572     strcat( serverdir, hostname );
 573
 574     /* connect to the server */
 575     fd_socket = server_connect( oldcwd, serverdir );
 576
 577     /* switch back to the starting directory */
 578     if (oldcwd)
 579     {
 580         chdir( oldcwd );
 581         free( oldcwd );
 582     }
 583
 584     /* setup the signal mask */
 585     sigemptyset( &block_set );
 586     sigaddset( &block_set, SIGALRM );
 587     sigaddset( &block_set, SIGIO );
 588     sigaddset( &block_set, SIGINT );
 589     sigaddset( &block_set, SIGHUP );
 590
 591     /* receive the first thread request fd on the main socket */
 592     NtCurrentTeb()->request_fd = receive_fd( &dummy_handle );
 593
 594     CLIENT_InitThread();
 595 }
 596
 597
 598 /***********************************************************************
 599  *           set_request_buffer
 600  */
 601 inline static void set_request_buffer(void)
 602 {
 603     char *name;
 604     int fd, ret;
 605     unsigned int offset, size;
 606
 607     /* create a temporary file */
 608     do
 609     {
 610         if (!(name = tmpnam(NULL))) server_protocol_perror( "tmpnam" );
 611         fd = open( name, O_CREAT | O_EXCL | O_RDWR, 0600 );
 612     } while ((fd == -1) && (errno == EEXIST));
 613
 614     if (fd == -1) server_protocol_perror( "create" );
 615     unlink( name );
 616
 617     wine_server_send_fd( fd );
 618
 619     SERVER_START_REQ( set_thread_buffer )
 620     {
 621         req->fd = fd;
 622         ret = SERVER_CALL();
 623         offset = req->offset;
 624         size = req->size;
 625     }
 626     SERVER_END_REQ;
 627     if (ret) server_protocol_error( "set_thread_buffer failed with status %x\n", ret );
 628
 629     if ((NtCurrentTeb()->buffer = mmap( 0, size, PROT_READ | PROT_WRITE,
 630                                         MAP_SHARED, fd, offset )) == (void*)-1)
 631         server_protocol_perror( "mmap" );
 632
 633     close( fd );
 634     NtCurrentTeb()->buffer_pos  = 0;
 635     NtCurrentTeb()->buffer_size = size;
 636 }
 637
 638
 639 /***********************************************************************
 640  *           CLIENT_InitThread
 641  *
 642  * Send an init thread request. Return 0 if OK.
 643  */
 644 void CLIENT_InitThread(void)
 645 {
 646     TEB *teb = NtCurrentTeb();
 647     int version, ret;
 648     int reply_pipe[2];
 649
 650     /* ignore SIGPIPE so that we get a EPIPE error instead  */
 651     signal( SIGPIPE, SIG_IGN );
 652
 653     /* create the server->client communication pipes */
 654     if (pipe( reply_pipe ) == -1) server_protocol_perror( "pipe" );
 655     if (pipe( teb->wait_fd ) == -1) server_protocol_perror( "pipe" );
 656     wine_server_send_fd( reply_pipe[1] );
 657     wine_server_send_fd( teb->wait_fd[1] );
 658     teb->reply_fd = reply_pipe[0];
 659
 660     /* set close on exec flag */
 661     fcntl( teb->reply_fd, F_SETFD, 1 );
 662     fcntl( teb->wait_fd[0], F_SETFD, 1 );
 663     fcntl( teb->wait_fd[1], F_SETFD, 1 );
 664
 665     SERVER_START_REQ( init_thread )
 666     {
 667         req->unix_pid    = getpid();
 668         req->teb         = teb;
 669         req->entry       = teb->entry_point;
 670         req->reply_fd    = reply_pipe[1];
 671         req->wait_fd     = teb->wait_fd[1];
 672         ret = SERVER_CALL();
 673         teb->pid = req->pid;
 674         teb->tid = req->tid;
 675         version  = req->version;
 676         if (req->boot) boot_thread_id = teb->tid;
 677         else if (boot_thread_id == teb->tid) boot_thread_id = 0;
 678         close( reply_pipe[1] );
 679     }
 680     SERVER_END_REQ;
 681
 682     if (ret) server_protocol_error( "init_thread failed with status %x\n", ret );
 683     if (version != SERVER_PROTOCOL_VERSION)
 684         server_protocol_error( "version mismatch %d/%d.\n"
 685                                "Your %s binary was not upgraded correctly,\n"
 686                                "or you have an older one somewhere in your PATH.\n"
 687                                "Or maybe the wrong wineserver is still running?\n",
 688                                version, SERVER_PROTOCOL_VERSION,
 689                                (version > SERVER_PROTOCOL_VERSION) ? "wine" : "wineserver" );
 690     set_request_buffer();
 691 }
 692
 693
 694 /***********************************************************************
 695  *           CLIENT_BootDone
 696  *
 697  * Signal that we have finished booting, and set debug level.
 698  */
 699 void CLIENT_BootDone( int debug_level )
 700 {
 701     SERVER_START_REQ( boot_done )
 702     {
 703         req->debug_level = debug_level;
 704         SERVER_CALL();
 705     }
 706     SERVER_END_REQ;
 707 }
 708
 709
 710 /***********************************************************************
 711  *           CLIENT_IsBootThread
 712  *
 713  * Return TRUE if current thread is the boot thread.
 714  */
 715 int CLIENT_IsBootThread(void)
 716 {
 717     return (GetCurrentThreadId() == (DWORD)boot_thread_id);
 718 }